diff --git a/vala-0.42.2.tar.xz b/vala-0.42.2.tar.xz
deleted file mode 100644
index a89fe6d..0000000
Binary files a/vala-0.42.2.tar.xz and /dev/null differ
diff --git a/vala-0.48.6.tar.xz b/vala-0.48.6.tar.xz
new file mode 100644
index 0000000..7d0773c
Binary files /dev/null and b/vala-0.48.6.tar.xz differ
diff --git a/vala.spec b/vala.spec
index a41e63f..25cc44e 100644
--- a/vala.spec
+++ b/vala.spec
@@ -1,53 +1,50 @@
-%global vala_version 0.42
-%global vala_priority 90
+%global api_ver 0.48
+%global priority 90
 %global vala_binaries vala valac vala-gen-introspect vapigen
 %global vala_manpages valac vala-gen-introspect vapigen
 
 Name:           vala
-Version:        0.42.2
+Version:        0.48.6
 Release:        2
 Summary:        Compiler Using the GObject Type System
 License:        LGPLv2+ and BSD
 URL:            https://wiki.gnome.org/Projects/Vala
-Source0:        https://download.gnome.org/sources/vala/0.42/vala-%{version}.tar.xz
+Source0:        https://download.gnome.org/sources/vala/0.48/vala-%{version}.tar.xz
+
 BuildRequires:  flex bison glib2-devel gobject-introspection-devel
 BuildRequires:  graphviz-devel libxslt dbus-x11
-Requires:       gobject-introspection-devel
-
-Requires(posttrans): %{_sbindir}/alternatives
-Requires(preun):     %{_sbindir}/alternatives
-
-Obsoletes: vala-tools < 0.34.0 valadoc
-Conflicts: vala-tools < 0.34.0
-
-Provides: vala-tools = %{version}-%{release} valadoc vala(api) = %{vala_version}
+BuildRequires:  dbus-x11
+Requires(pre):  %{_sbindir}/alternatives
+Requires:       libvala = %{version}-%{release} gobject-introspection-devel
+Requires:       %{name} = %{version}-%{release}
+Obsoletes:      vala-tools < 0.34.0
+Conflicts:      vala-tools < 0.34.0
+Provides:       vala-tools = %{version}-%{release} vala(api) = %{api_ver}
+Provides:       valadoc = %{version}-%{release}
+Obsoletes:      valadoc < %{version}-%{release}
 
 %description
-Vala is a programming language using modern high level abstractions without
-imposing additional runtime requirements and without using a different ABI
-compared to applications and libraries written in C. Vala uses the GObject
-type system and has additional code generation routines that make targeting
-the GNOME stack simple. Vala has many other uses where native binaries are
-required.
+Compiler Using the GObject Type System.
 
-%package devel
-Summary: Development package for %{name}
-Requires: %{name}%{?_isa} = %{version}-%{release}
-Obsoletes: valadoc-devel
-Provides: valadoc-devel
+%package    devel
+Summary:    Library and and head file for vala compiler
+Requires:   libvala = %{version}-%{release} valadoc = %{version}-%{release}  
+Provides:   vala-devel = %{version}-%{release} libvala = %{version}-%{release}
+Provides:   libvala-devel = %{version}-%{release} valadoc-devel = %{version}-%{release}
+Obsoletes:  vala-devel < 0.43 libvala = %{version}-%{release}
+Obsoletes:  libvala-devel = %{version}-%{release} valadoc-devel = %{version}-%{release}
 
 %description devel
-Provide headers and libraries for %{name} development
+Library and and head file for vala compiler.
 
-%package   help
-Summary:   Help files for %{name}
-Requires:  %{name} = %{version}-%{release}
-Obsoletes: %{name}-doc
-Provides: %{name}-doc
-BuildArch: noarch
+%package    help
+Summary:    Help documents for vala
+Requires:   %{name} = %{version}-%{release} devhelp
+Provides:   %{name}-doc = %{version}-%{release}
+Obsoletes:  %{name}-doc < %{version}-%{release}
 
-%description help
-This package contains user documentation for %{name}.
+%description  help
+Help documents for vala.
 
 %prep
 %autosetup -n %{name}-%{version} -p1
@@ -59,96 +56,72 @@ sed -i 's|/lib /usr/lib|/lib /usr/lib /lib64 /usr/lib64|' libtool
 
 %install
 %make_install
-for f in %{vala_binaries}
-do
-    rm %{buildroot}%{_bindir}/$f
-    touch %{buildroot}%{_bindir}/$f
-done
-for f in %{vala_manpages}
-do
-    rm %{buildroot}%{_mandir}/man1/$f.1*
-    touch %{buildroot}%{_mandir}/man1/$f.1.gz
-done
-mkdir -p %{buildroot}%{_datadir}/vala/vapi
 
+install -d $RPM_BUILD_ROOT%{_datadir}/vala/vapi
 %delete_la
 
 %check
 make check
 
 %pre
+if [ $1 -gt 1 ] ; then
+    for f in %{vala_binaries};
+    do
+        %{_sbindir}/alternatives --remove-all $f >& /dev/null || :
+    done
+    for f in %{vala_manpages};
 
-%posttrans
-for f in %{vala_binaries};
-do
-    %{_sbindir}/alternatives --install %{_bindir}/$f \
-      $f %{_bindir}/$f-%{vala_version} %{vala_priority} || :
-done
-for f in %{vala_manpages};
-do
-    %{_sbindir}/alternatives --install %{_mandir}/man1/$f.1.gz \
-      $f.1.gz %{_mandir}/man1/$f-%{vala_version}.1.gz %{vala_priority} || :
-done
-
-%preun
-for f in %{vala_binaries};
-do
-    %{_sbindir}/alternatives --remove $f \
-      %{_bindir}/$f-%{vala_version} || :
-done
-for f in %{vala_manpages};
-do
-    %{_sbindir}/alternatives --remove $f.1.gz \
-      %{_mandir}/man1/$f-%{vala_version}.1.gz || :
-done
-
-%post
-
-%postun
+    do
+        %{_sbindir}/alternatives --remove-all $f.1.gz >& /dev/null || :
+    done
+fi
 
 %files
 %license COPYING
-%ghost %{_bindir}/vala
-%ghost %{_bindir}/valac
-%ghost %{_bindir}/vala-gen-introspect
-%ghost %{_bindir}/vapigen
-%{_bindir}/vala-%{vala_version}
-%{_bindir}/valac-%{vala_version}
-%{_bindir}/vala-gen-introspect-%{vala_version}
-%{_bindir}/vapigen-%{vala_version}
-%{_bindir}/valadoc
-%{_bindir}/valadoc-%{vala_version}
+%{_bindir}/vala
+%{_bindir}/vala-%{api_ver}
+%{_bindir}/valac
+%{_bindir}/valac-%{api_ver}
+%{_bindir}/vala-gen-introspect
+%{_bindir}/vala-gen-introspect-%{api_ver}
+%{_bindir}/vapigen
+%{_bindir}/vapigen-%{api_ver}
 %{_libdir}/pkgconfig/vapigen*.pc
-%{_libdir}/vala-%{vala_version}/
-%{_libdir}/libvala-%{vala_version}.so.*
-%{_libdir}/libvaladoc-%{vala_version}.so.0*
-%{_libdir}/valadoc/
+%{_libdir}/vala-%{api_ver}/
 %{_datadir}/aclocal/vala.m4
 %{_datadir}/aclocal/vapigen.m4
 %{_datadir}/vala/
-%{_datadir}/vala-%{vala_version}/
-%{_datadir}/valadoc/
+%{_datadir}/vala-%{api_ver}/
+%{_bindir}/valadoc
+%{_bindir}/valadoc-%{api_ver}
+%{_libdir}/libvaladoc-%{api_ver}.so.0*
+%{_libdir}/valadoc-%{api_ver}/
+%{_datadir}/valadoc-%{api_ver}/
 
 %files devel
-%{_includedir}/vala-%{vala_version}
-%{_libdir}/libvala-%{vala_version}.so
-%{_libdir}/pkgconfig/libvala-%{vala_version}.pc
-%{_includedir}/valadoc-%{vala_version}/
-%{_libdir}/libvaladoc-%{vala_version}.so
-%{_libdir}/pkgconfig/valadoc-%{vala_version}.pc
+%license COPYING
+%{_libdir}/libvala-%{api_ver}.so.*
+%{_includedir}/vala-%{api_ver}
+%{_libdir}/libvala-%{api_ver}.so
+%{_libdir}/pkgconfig/libvala-%{api_ver}.pc
+%{_includedir}/valadoc-%{api_ver}/
+%{_libdir}/libvaladoc-%{api_ver}.so
+%{_libdir}/pkgconfig/valadoc-%{api_ver}.pc
 
 %files help
-%doc %{_datadir}/devhelp/books/vala-%{vala_version}
-%ghost %{_mandir}/man1/valac.1.gz
-%ghost %{_mandir}/man1/vala-gen-introspect.1.gz
-%ghost %{_mandir}/man1/vapigen.1.gz
-%{_mandir}/man1/valac-%{vala_version}.1.gz
-%{_mandir}/man1/vala-gen-introspect-%{vala_version}.1.gz
-%{_mandir}/man1/vapigen-%{vala_version}.1.gz
-%{_mandir}/man1/valadoc-%{vala_version}.1*
+%{_mandir}/man1/valac.1*
+%{_mandir}/man1/valac-%{api_ver}.1*
+%{_mandir}/man1/vala-gen-introspect.1*
+%{_mandir}/man1/vala-gen-introspect-%{api_ver}.1*
+%{_mandir}/man1/vapigen.1*
+%{_mandir}/man1/vapigen-%{api_ver}.1*
+%{_mandir}/man1/valadoc-%{api_ver}.1*
 %{_mandir}/man1/valadoc.1*
+%doc %{_datadir}/devhelp/books/vala-%{api_ver}
 
 %changelog
+* Wed Jun 3 2020 wutao <wutao61@huawei.com> - 0.48.6-2
+- Upagrade to 0.48.6-2
+
 * Mon Dec 9 2019 openEuler Buildteam <buildteam@openeuler.org> - 0.42.2-2
 - Package init
-